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- Title
Enhanced Visible‐Light Photoactivities of Perovskite‐Type LaFeO<sub>3</sub> Nanocrystals by Simultaneously Doping Er<sup>3+</sup> and Coupling MgO for CO<sub>2</sub> Reduction.
- Authors
Li, Sijia; Li, Yanzhen; Chen, Yajie; Xu, Linna; Chen, Qiuyu; Qu, Yang; Wang, Guofeng; Zhu, Peifen; Wang, Dingsheng; Qin, Weiping
- Abstract
The use of solar energy to convert CO2 into chemical fuels not only can create renewable energy but also can alleviate the greenhouse effect. In this work, MgO/LaFeO3 : Er3+ composites were prepared, and their photocatalytic CO2 reduction capability was tested under visible‐light irradiation. The MgO/LaFeO3 : Er3+ composites displayed improved charge carrier separation efficiency, higher CO2 adsorption capacity, and increased photoactivities for photocatalytic CO2 reduction to CO and CH4 (71.52 μmol g−1 h−1 and 5.54 μmol g−1 h−1, respectively). As a comparison, the production rates of CO and CH4 are 29.36 μmol g−1 h−1 (CO) and 4.13 μmol g−1 h−1, respectively for pure LaFeO3. The enhanced photoactivities are attributed to the increased electron‐hole separation rate resulting from the Er3+ doping and improved CO2 adsorption capacity by MgO coupling. This work thus identifies a novel approach towards highly efficient photocatalysts for CO2 reduction.
- Subjects
CARBON dioxide adsorption; PHOTOREDUCTION; ADSORPTION capacity; GREENHOUSE effect; SOLAR energy; CHARGE carriers; NANOCRYSTALS
- Publication
ChemCatChem, 2020, Vol 12, Issue 2, p623
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201901294